Brake for cars



(No Model.)

W. M. DILLS.

BRAKE FOR CARS.

No. 593,@35. Patented NOVI 9,1897.

DI w Aw Y I JNVENTOR QW@ @Maw l' n www U1/'k j UNITED STATES PATENT OEEICE.

XVILLIAM M. DILLS, OF KANSAS OITY, MISSOURI.

BRAKE FoR CARS.

SPECIFICATION forming part ef Lettere Patent Ne. 593,535, dated November 9, 1897.

Application led January 21, 1897. Serial No. 620,115. (No model.)

To all whom, t may concern;

Be it known that I, WILLIAM M. DILLs, a citizen of the United States, residing at Kan'- sas Oity, in the county of .Iackson and State of Missouri, have invented certain new and useful Improvements in Emergency-Brakes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to brakes for cars; and it has for its objects, among others, to provide a simple and cheap device applicable to any and all cars and adapted for arresting the speed of the same with absolute certainty and preventing accidents from runaways on inclines.

A further object is to provide a simple and inexpensive device always under the control of the motorman, conductor, or other person, and comprising principally a grip or shoe mounted beneath the truck or car and adapted to embrace and cramp the rail and to form a positive brake. A pedestal is secured to the under side of the sill of the car centered directly over the center of the rail. The jaws of this pedestal are concaved to a radius struck from the exact middle point of the jaws. In these jaws is placed a brake block or shoe whose edges areconvexed to corre` spond to the curvature of the jaws. From the center of the top of the brake-block a pivotal bolt passes up from the bolt of the pedestal and through the carsill and is provided, preferably above the sill, with a spring to lift the shoe when the brake is thrown off. This permits of the rotation of the block in the pedestal. In a suitable recess in the brake-shoe is placed an eccentric keyed to the shaft extending normally at right angles to the line of travel of the car and reaching nearly to the center line of the car. On the inner end of this shaft is keyed a spool, upon which is wound a partial turn of the drawingchain. The shaft passes through a slotted bar on the back of the pedestal, thus permitting of lateral but not of vertical motion, in order that the eccentric may freely rotate and force the brake block or shoe down onto the rail. The inner end of this shaft is supported by a hanger or link which permits of lateral motion, and said hanger is furnished with a spring or springs to return it to its normal position when the brake is off. Any suitable means may be provided for operating the grip or brake. Alever and connections on a common shaft or wheel-brake stem might be employed, if preferred. Normally the brake is out of operative rela-tion with the rail. The parts are so disposed and arranged with relation to each other that the first pull upon the chains forces the shoe down over the rail, and the continued force pulls the shaft out of line, so as to rotate the brake-block and cause it to cramp the rail. One or more of these grips or shoes may be arranged upon each side of each car and adapted to operate upon v both rails or all upon the one rail, asA may be deemed preferable.

Other objects and advantages of the invention will hereinafter appear, and the novel features thereof will be particularly pointed out in the appended claims.

The invention is clearly illustrated in the accompanying drawings, which, with the letters of reference marked thereon, form a part of this specification, and in which- Figure l is avertical cross-section through a portion of the car and rails, showing one of the grips in operative position and the other thrown up into the position which it normally assumes. Fig. 2 is a detail, partly in elevation and partly in section, taken at right angles to Fig. l.y Fig. 3 is a vertical section through the line 3 3 of Fig. l. Fig. 4 is a detail section through the pedestal, brake shoe, and eccentric. Fig. 5- is a cross section through the pedestal, the brake-shoe, and the slotted bar. Fig. 6 is a detail of the hanger and its springs. f

Like letters of reference indicate like parts in the several views.

. Referring now to the details of the drawings by letter, A A designate the rails, and

B a portion of a car or truck or frame thereof, which latter may be of any of the wellknown forms of construction.

O is a pedestal bolted to the under side of the sill of the car and centered directly over the center of the rail. This pedestal has jaws c, which are concaved to a radius struck from the exact middle of the jaws, and in these jaws is placed a brake .block or shoe D,

IOO

`brake block or shoe extends a pivotal bolt D', which passes through the pedestal and through the car-sill and is provided above the sill with a spring D2, arranged to lift the shoe Awhen the brake is thrown O, and in this position it is normally held by said spring. will be observed that by this arrangement'the block is mounted fordrotary movement upon said pivotal bolt as a center. In a recess or orifice e of this brake-block is placed an eccentric E, keyed to the shaft E', extending normally at right angles to the length of the rail and reaching nearly to the centerline of the car. On its inner end is keyed or otherwise fastened a spool F, on which is wound a partial turn of the drawing-chain G. This shaft passes through a slotted bar g on the back of the pedestal, which permits of the lateral but not of vertical movement, so that the eccentric may freely rotate in its recess and force the brake-block down on the rail when the shoe is rotated in its bearings. The inner end of this shaft is supported by alink H, which permits of lateral motion, and this han geris furnished with the springs l, adapted to return it to its normal position when the brake is off. It will thus be observed that the shaft or arm E is mounted not only for rotary movement in a horizontal plane in the pedestal or hanger, but by reason of the movement of the latter, as upon a swivel, the said arm 0r shaft can be brought at an angle otherwise than a right angle with the line of track, so that when it is desired to apply the brake the arm or shaft is given a partial rotation, so as to throw the grip or claw downint'o the position in which it is shown at the left of Fig. l to embrace the rail, and continued force upon the driving-chain pulls the shaft out of line, thusl turning the brake-shoe on its pivot and causing it to grasp the rail upon opposite sides in a line out of line with the rail, and thus cramp the latter and arrest the speed of the car.

Any suitable means may be provided for operating the shaft or arm E', either from the front end of the car or from the locomospeciiication in the presence of two subscribtive. The shaft or arm is normally held in the position shown at the left of Fig. 1, with the grip or shoe disposed horizontally and above and out of the line of the rail.

Modilications in details may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is

l. A brake for a car, comprising a shaft carrying a grip and mounted for rotary movement in a horizontal plane and also upon a vertically-disposed pivot, substantially as described.

2. The combination with a car, of apedestal depending therefrom, a brake shoe or grip mounted for rotary movement, a horizontallydisposed rotatable shaft, an eccentric thereon for operating the brake-shoe, and a pivotal support for said shoe, whereby the initial movement of the shaft depresses the shoe and continued movement moves the shoe up on its pivot.

3. The combination with a car, of a hanger supported therefrom for pivotal movement, and a shaft carrying a grip mounted in said hanger for rotary movement in a horizontal plane and constructed and arranged to be thrown in an angular line across the rail, substantially as described.

et. The combination with a car,and a hanger supported therefrom, of a shaft carrying a grip and supported from said hanger for ro` tary movement in a horizontal plane and for movement angularly to the lines of travel of the car, substantially as described.

5. The combination with the pedestal and the brake-shoe carried thereby and mounted for vertical and rotary movement, of a slotted arm, a shaft passed therethrough, an eccentric ou said shaft constructed to operate u'pon the brake-shoe to depress it, and means for rotating said shaft and moving it angularly to the line of track, substantially as described.

6. The combination with the pedestal and the brake-shoe carried thereby andmonnted for vertical and rotary movement, of a slotted Y to the line of track, and means for returning t-he parts to their normal position automatically, substantially as described.

In testimony whereof I have signed this ing witnesses. A

W. M. DILLS.

Witnesses:

JAMES L. MITCHELL, THEO. L. CARNs. 

